Cleaning device for pressure cylinders of rotary printing presses

ABSTRACT

A cleaning device ( 1 ) having a guide rail ( 3 ) with a longitudinally moveable carriage, to which carriage ( 4 ) a washing apparatus ( 5 ) is releasably affixed. The guide rail ( 3 ) is positionally adjustable for operationally placing the washing apparatus ( 5 ) at a printing cylinder ( 2 ). The washing apparatus ( 5 ) is connected to a supply unit by means of supply lines. The supply lines extend within the guide rail ( 3 ) from the washing apparatus ( 5 ) to a stationary connection position ( 7 ). The guide rail ( 3 ) includes a suction wastewater channel ( 14 ) which is placed between an upper section ( 15 ) and a lower section ( 16 ) of a movable belt ( 19 ) which is designed for the reciprocal transport of the carriage ( 4 ). A belt ( 19 ) section ( 15 ) forms a cover for the suction wastewater channel ( 14 ). The carriage ( 4 ) is provided with a connection fitting ( 25 ) penetrating into the suction wastewater channel, and at the stationary connection point ( 7 ) a connection pipe ( 26 ) is connected to the suction wastewater channel ( 14 ), while the remainder of the supply lines run beside the suction wastewater channel ( 14 ) within the guide rail ( 3 ) from the stationary supply position ( 7 ) to the carriage ( 4 ).

BACKGROUND

The invention concerns a cleaning device for the printing cylinder of arotary printing press, with a guide rail placed somewhat parallel to theprinting cylinder, on which a longitudinally movable carriage slides,and upon which a washing apparatus is releasably mounted, whereby theguide rail, in order to place the washing apparatus before the printingcylinder, is controllingly displaceable, and wherein the washingapparatus is connected to a supply center by means of supply lines forwashing detergents, air, electrical current, and the like.

On a rotary printing press, due to normal operation and dependent uponthe kin of color and the paper to be printed, buildups of colors andpaper dust form. This buildup increases with the quantity of printing,and after a certain amount has accumulated, the printing quality isnegatively affected.

In most cases, the usual printing cylinder, which may be made of rubbercloth, is manually cleaned during a machine stop, which practice,besides the expense, presents safety risks for the personnel, since thecylinder rotates with a motorized drive.

For some time, automated washing systems for the cleaning of theprinting cylinder have been installed. These systems are based on arotating brush or a cleaning cloth which periodically unwinds itself andby means of a nozzle spray system is wetted with a selected detergentand water. The cleaning process is carried out by means of placement ofsaid cloth on the rotating printing cylinder. All these systems clean bythe application of a detergent.

Such washing systems are specific to each printing cylinder and areinstalled, to wash the printing cylinder in an appropriate cycle,between a number of printings in one run and/or after the end of theprinting run. By means of this washing, the color and paper dustdeposits are cleaned away. The freshly cleaned rubber cloth of therubber cloth cylinder now assures a continuation of printing of thecurrent run with a good degree of quality, or provides the properstarting conditions after a change of print order.

The washing systems are mostly automatically activated, and installed onthe printing cylinder and are initiated by a specified washing programfrom the control station of the rotation equipment or by means of amaster controller.

A disadvantage of these wash systems which are found on the market, isthe specific attachment to only one printing cylinder. Especially duringmounting of the wash system, the integration of the equipment into theprinting machine becomes a complex operation. In addition to this,design accommodations are necessary, matching each rotation machine typeand rotation machine format, with consideration given to the cylindercircumference. The design then extends itself not only to the washsystem but also to the rotary machine itself.

Further disadvantages lie in the width of the washing system. Allsystems must have the same axial width as the cylinder to be cleaned.Disadvantages are further conditioned by the rigid installation anddedication to a specific printing cylinder. Further, consideration mustbe given to the technical construction of the cylinder as well as to thelimited ergonomical possibilities.

The required accessibility for the operator is, with the above assembly,limited. Thus, the rubber cloths, which are found on the rubber clothcylinder and which, due to damage or wear during or after the print run,have to be changed, can only be changed when the particular washingsystem is dismantled and removed.

A further disadvantage is that systems, because of their stationaryinstallation on the specific printing roll, are, as a rule, notgenerally exchangeable. Analogously then, the number wash systems to beinstalled will be the same as the number of printing rollers.

Yet a further disadvantage is the amount of service, cleaning, andmaintenance which calls for a high expenditure of technical time.

EP 0 928 687 A1 discloses a rubber cloth cleaning device, which issmaller than the breadth of the printing cylinder to be cleaned. Thiscleaning device can be moved along a guide rail parallel to thelongitudinal extent of the printing cylinder. Thereby, by the pushing ofthe cleaning device along the guide rail, the accessibility and visionat any optional point on the rubber cloth cylinder is made possible.

In the case of this cleaning device, the connection of the in and outflow lines from an external, central supply point is directly through acentral supply hose to the washing apparatus. The central supply hoseis, in this case, conducted by a carrier, whereby, a sufficient freedomof movement must be allowed to compensate for the movements of the washapparatus. These hoses, in the case of generally tight spacerequirements of the printing machines, are not particularly desired,because of the loose line guidance due to the movement of the washingapparatus. This arrangement is also disadvantageous, because, amongother things, of the danger of damage.

From safety considerations, it is often not allowable to supplyelectrical energy, hot water, and detergent by means of one loosecentral supply hose in the direct proximity of rotating printingcylinders. The supply hose could be a central consolidating carrying inturn the supply hoses for said media. Added to these, could be anotherhose for the return flow of the spent water-detergent mixture.

SUMMARY

The object of the present invention is to create a cleaning device ofthe kind described in the introductory passages, which, in total, isspace saving and with which an extended loose connection is avoided, sothat even an installation in safety relevant areas is possible.

For the achievement of this object, it is proposed, that: the supplylines be conducted through the inside of the guide rails from thewashing apparatus to a stationary connection point, that the guide railpossess internally a suction wastewater channel, which is placed betweenupper and the lower sections of a belt running between turnaroundrollers for the transport of the carriage, that a belt section from anextensively sealing covering for the open suction wastewater channellocated on a longitudinal side, that in the area of the carriage, atleast one access pipe fitting be conducted into the interior of thesuction wastewater channel, and that proximal to the stationaryconnection point, a connecting pipe is provided which is connected tothe access pipe fitting entering the suction wastewater channel, andthat the remaining supply lines beside the suction wastewater channelrun inside the guide rail from the stationary connection point to thecarriage.

In this way, a loose, bulky outlay of a line is avoided. Especially, bythis arrangement in accordance with the invention, the supply andremoval lines are protectively conducted in the interior of the guiderail, so that damages from external influences are avoided and also areplacement is possible in safety relevant areas.

An advantageous embodiment provides, that the suction wastewater channelis made in essentially a U-shaped profile, as seen in a cross sectionend view, whose open side is covered over by a section of the belt.Advantageously the longitudinal edges of the belt on its surface distalfrom the suction wastewater channel are provided with longitudinallyextended side rims. Because of the low pressure in the suctionwastewater channel, the belt is sealingly pressed onto the edges of theU-shaped member and is guided laterally by means of the side rims.

It is particularly advantageous, if the belt, advantageously designed asa toothed belt, on the inside, respectively in the area proximal to theedges, prossesses in the circumferential direction penetrating grooves,and if the suction wastewater channel sealingly engages the edges of itsopen longitudinal sides in the penetrating grooves.

By this means, a good, tight seal is made between the belt and theU-shaped member. One embodiment provides, that the guide rail be made inthe shape of a basin, and possess on the outside, advantageously,U-shaped guiding members. The carriage overlaps the U-shaped guidingmembers, preferably with bearing based sliding means.

By means of the outside located guides, the inner space thereof standsavailable to receive the suction wastewater channel and to contain thenecessary supply lines. Beyond this, the guides for the carriage arefound at the most extreme side to side distance as possible, whereby thepositioning is stabilized and an exact guidance even at higheroperational demands is available.

The guide rail possesses an open inside cross-section for the receptionof the suction wastewater channel with the belts which run about them,as well as a receiving space for the supply lines which are especiallyheld by a drag chain.

The drag chain is fastened at one end of the guide rail and runs,loopwise, to the carriage. The suction wastewater channel can besomewhat distanced by being placed at the bottom of the guide rail, sothat, first, space for the one section of the belt which runs throughunder the suction wastewater channel, and second, a place is made for apart of the drag chain. The guide rail has, thus, the entire insidewidth of the guide rail available for the storage of the temporarilyunused, portion of the drag chain. This allows for the coiling of largersupply lines.

In a purposeful manner, the stationary connection point, for the supplylines which are conducted to the carriage, is placed at one end of theguide rail, whereby for the movement of the supply lines within theguide rail, advantageously, a pull chain is provided. This arrangementbrings the stationary supply connection outside of the danger zone ofdamage. On the outer ends of the guide rails, as a rule, there is to befound either a lateral carrying structure or a wall, on which the guiderail is supported by means of a holder. On this carrying structure orwall, as the case may be, it is also possible to install a connectionbetween the supply source and the stationary connection point.

The stationary connection point, which also does not join in the lateraldisplacement movement of the carriage, possesses advantageously, a shortpiece of line, which protrudes out of the guide rail. On the end of thisshort piece of line, are provided connection fittings for directconnection, or connection by means of a feedline to the supply sourceunit.

Advantageously, a hose is connected onto the connecting pipe of thesuction wastewater channel which opens at the connection point.Preferably, at the stationary connection point, quick opening, plug-inconnections would be provided for connection to the supply source unit.Thereby a quick on and off coupling is possible, for instance formaintenance purposes.

The guide rail possesses sliding elements at its outer ends, for forwardand back movements transverse to its longitudinal extent, to be insertedin appropriate holding means. For this movement, thrust cylinders,preferably compressed air cylinders, are provided. These cylinders arecorrespondingly located at the ends of the guide rail and are coupled tolateral holding means by their thrust elements.

Activated by remote control, the thrust cylinders move the guide railassembly with the washing apparatus which is mounted thereon, over anadjustable thrust range forward to the washing position and back againinto an idle position.

Advantageously, the carriage and the washing apparatus which isremovably affixed thereon, possess on their mutually facing sides,electrical plug-in connections, liquid couplings, as well as wastewaterconnections, which are designed as self coupling, complementaryelements. Moreover, for the positional precision of carriage and washingapparatus relative to said coupling and connections, at least onepositioning pin with a complementary counter opening is providedtherebetween.

By these means, all supply and removal lines are automatically coupledwhen the washing apparatus is set in place, and in reverse manner, saidlines can be disconnected upon removal of the washing apparatus. Thus itis possible to effect an exchange of the washing apparatus in the leastamount of time.

Besides such an exchange in the case of maintenance work, this ease ofconnection facility is especially of value, when one washing apparatusis employed successively for a plurality of printing cylinders, forwhich, in each case, a guide rail has been installed.

Another embodiment makes the proposal, that for the interconnection ofthe washing apparatus and the carriage, advantageously, tongues withcomplementary entry openings can be used, and distanced from thisconnection position, a lock jointure be provided with a manuallyactivated locking lever.

In this way, the washing apparatus can be connected without tools to thecarriage, since the tongues enter into receiving openings, the washingapparatus is set on the carriage, and then secured by the locking leverhandle. All supply and removal lines are again in this operation,automatically coupled.

As washing apparatuses, different types of construction can be used,which, however, must possess the same connection configuration forconnection to the carriage, so that they are exchangeable, by choice andsubstitution, with the carriages.

Among other designs, the possibility exists, that the washing apparatuspossesses two, somewhat axis parallel brushes, which are installed inhousing areas separate from one another and the application area of eachpoints in different directions for the simultaneous application to twoassociated printing cylinders.

Additional embodiments of the invention are to be found in theadditional subordinate claims.

BRIEF DESCRIPTION OF THE DRAWING(S)

In the following, a preferred embodiment of the invention, with itsessential details, is described in greater detail with the aid of thedrawings.

In the drawings:

FIG. 1 is a cross-sectional view through a guide rail of a cleaningdevice with the washing apparatus placed thereon,

FIG. 2 is a somewhat schematized longitudinal profile view of thecleaning device shown in FIG. 1,

FIG. 3 is a perspective view of the cleaning device for a printingcylinder with a wash apparatus designed as an interchangeable module.

FIG. 4 is a cross-sectional view of a cleaning device with an embodimentof a washing apparatus changed from that of FIG. 1, and

FIG. 5 is a cross-sectional view of a cleaning device with a twinwashing apparatus for the simultaneous cleaning of two printingcylinders.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

A cleaning apparatus 1 is provided for the cleaning of a printingcylinder 2, on which, as a matter of course in operation, deposits ofcolor and paper particulate accumulate, which, from time to time, mustbe removed. As is shown schematically in FIG. 3, the cleaning device 1includes a guide rail 3 which runs essentially parallel to the printingcylinder 2, on which guide rail 3 a longitudinally moveable carriage 4is placed and can be releasably connected to the washing apparatus 5.

The washing apparatus 5, has, on its side proximal to the printingcylinder 2, one or more rotating brushes 6 (FIGS. 1, 4 and 5), which canbe applied to the printing cylinder 2 for the cleaning thereof. For themovement for operational positioning, the guide rail 3 on its outerends, transverse to its longitudinal extent, is so carried as to bemovable between an idle position and an operating position in accordwith the double arrow Pf.1 (see FIGS. 2 and 3).

Water and detergent, along with electrical power, are fed from externalsources to the carriage 4 which can travel along the guide rail 3.Besides these services also control lines are connected to the carriage,4, and forwarded to the washing apparatus 5. Spent mixtures of water anddetergent are drained away from the washing apparatus 5 through asuction wastewater channel.

In accordance with the invention, the supply and removal lines are ledinside the guide rail 3 from the washing apparatus 5 to a laterallyplaced, stationary connection point 7 which does not join in thelongitudinal movement of the washing apparatus 5.

A removal line on the one hand, and a supply line on the other areconducted through two separated chambers.

As can easily be seen in FIG. 1, the guide rail 3 is shaped like abasin, designed with a somewhat U-shaped cross-section. The guide rail 3includes on the outside of U-side legs 8 and 9, structural U-bars 10,for the guidance of the carriage 4. This carriage 4 is likewise,U-shaped in its cross-section and overlaps with its side legs 11 and 12extending downward, the legs of the guide rail 3. The U-side legs 11 and12, carry on their inside, advantageously, ball bearing sliders 13,which engage in the U-bars 10.

As a removal line for wastewater and detergent, inside of the guide rail3, a suction wastewater channel 14 is provided. This suction wastewaterchannel 14 is located between the upper belt section 15 and the underbelt section 16, these being sections of a continuous belt 19reciprocating between turn-around rollers 17, 18 (FIG. 2). This belt 19serves for the forward and back transport of the carriage 4.

The suction wastewater channel 14 is open on its upper longitudinalside, and, on that side, to a great extent, is sealingly covered by theupper belt section 15.

The lower belt section 16 of the belt 19 runs underneath the suctionwastewater channel 14. As is easily seen in FIG. 1, the suctionwastewater channel 14 is, essentially, again made in a U-shaped crosssection 20, the open longitudinal side of which is covered, as noted, bythe upper section 15 of the belt 19. The belt 19 is advantageouslyfabricated as a toothed belt, and possesses on the inside, respectivelyin the edge zones, grooves 21 which run peripherally about the saidbelt. In the area of the upper belt section 15, the said longitudinaledges engage the open sides 22 of the suction wastewater channel, thatis, the U-profile 20, in the grooves 21. The belt 19 is therebyside-guided and beyond this, provides at the same time a better sealingclosure of the suction wastewater channel 14. On the upper side of theupper belt section 15, there run in addition side members 23. These sidemembers 23 overlap the edges of the belt 19, somewhat up to longitudinaledges 22 of the open top longitudinal side of the suction wastewaterchannel 14, and form an additional guidance for the belt 19.

The belt 19 is preferably made of plastic. However, belts of rubber ormetal may be employed.

As already mentioned, the belt 19 reciprocates by means of turn-aroundrollers 17, 18 located at far ends outside of the ends of the suctionwastewater channel 14. These turnaround rollers 17, 18 are coupled witha drive motor 24. The belt 19, on this account, can be run in eitherdirection. In the disclosed embodiment, a drive motor 24 is axiallycoupled to the turn-around roller 17. This does not exclude thepossibility that the motor can be offset to the side, in which casedrive power transmission to the turn-around rollers 17, 18 would be by achain or another belt.

The carriage 4 is coupled with the belt 19 in order to be able to carryout a forward and back motion along the guide rail 3. For this purpose,the belt can be designed as fixed on one end and with its free endconnected to the carriage 4. In the depicted embodiment, the belt 19 isshown designed as an endless belt. In the area of the carriage 4, (FIG.2) a plurality of connection fittings 25 are furnished which serve aswastewater connectors into the interior of the suction wastewaterchannel 14. These connection fittings 25 sealingly penetrate the belt 19and crate thereby, a connection between the interior of the suctionwastewater channel 14 and the washing apparatus 5 which is set on thecarriage 4. In addition to this, through the penetrative engagement inthe belt 19, the fittings 25 also form coupling elements for the driveconnection.

Since the belt 19, for the purpose of covering over the suctionwastewater channel 14, has a corresponding width of, for example, 3 cm,then also, correspondingly dimensioned connection fittings 25, can beprovided with, for example, diameters of 15 mm to some 20 mm, in orderto allow an effective drainage. The entire through flow cross-sectioncan be made to match the requirements by means of the number of theconnection fittings 25 which are placed beside one another along thebelt 19.

In the case of the connection position 7, a connection pipe 26 isattached to the suction wastewater channel 14 for a (not shown) supplyunit, which, by means of a hose, is connectable to a source unit whichpossesses a suction apparatus.

As is to be seen in FIG. 2, the connection position 7 is to be found tothe left at the end of the guide rail 3. Besides the connection pipe 26,belonging to this connection point 7, are the following, which arementioned, but not described in detail, for instance: quick separatingplug-in connections 27 for the supply of hot water, detergents, steam,compressed air as well as electrical energy. The supply source which isassociated with the connection position 7 possesses an electroniccontrol apparatus, preferably a programmable stored program control,which can have an interface to an overriding control of the printingmachine. Beyond that, there is provided respectively, an apparatus forgenerating hot water, steam, suction, a source of compressed air and adetergent dispensing device.

Within the guide rail 3 are placed supply lines with the operationalmedia provided for the services of the washing apparatus 5. These linesare located beside, or possibly under, the suction wastewater channel 14in a drag chain 28 (FIG. 2). One end of the drag chain 28 is anchored atthe connection point 7, while the other end is attached to the carriage4 and moves forward and back with the said carriage. For this purpose,the drag chain 28 is installed in a manner resembling a hose.

The carriage 4 and the washing apparatus 5 connected thereto possess ontheir sides which face one another, electrical plug-in fittings, liquidconnections as well as the coupling for wastewater suction. Theseconnections, where required, are provided with the appropriate pipingsupports and O-ring seals. The couplings are designed as self-coupling,complementary elements, so that, upon the placing of the washingapparatus 5 on the carriage 3, all supply and removal serviceconnections are automatically made.

For the precise placement orientation of the coupling of the carriage 4and the washing apparatus 5, a positioning pin 29 with a complementarilyengaging counter opening (FIG. 5) is provided.

For the mechanical connection of the washing apparatus 5 and thecarriage 4, as shown in FIG. 1, hooklike, insertable tongues 30 arefurnished on the washing apparatus 5. On the carriage 4 arecomplementary openings 31 for said tongues.

This connection is to be found on the one longitudinal side of thecarriage 4, while on the other longitudinal side, the mechanicalconnection comprises a manually operated locking lever 32, for which abolt 33 on the carriage 4 serves as fulcrum.

For the operational movement of the cleaning device 1, the guide rail 3is so mounted that it is moveable only transversely to its longitudinalextent. For this purpose, on both of the outer ends of the guide rail 3,sliding elements 34 are installed. These sliding elements 34 make itpossible for the guide rail 3 to be taken up by holding members, whichare installed on both sides of the printing cylinder, and to accomplishthe operational movement, the washing apparatus 5 is also movedtransversely to bring its brushes 6 into contact with the printingcylinder 2. Serving as a drive for this transverse movement, thrustcylinders with pistons 35, are integrated into the guide rail 3. Thecylinders are secured onto the lateral holding members by the plates 36.By programmed, pneumatically controlled action of the pistons 35, thesepistons move the guide rail 3, with the superimposed washing apparatus 5through a specified distance into the washing position and then backagain into an idle position.

The washing apparatus 5 possesses at least one rotating brush 6, whichis connected to a rotational drive, wherein this drive is eitherintegrated in the brush 6 or the drive power is transmitted byintermediate chain or belt connection to the said brush 6. As is obviousfrom FIG. 1, the application area of the brush 6 of the washingapparatus 5 is bordered by a flat, brushlike cleaning blade 37. Besidesthis, one or more suction removal openings 38 for the accumulatingwastewater and detergent mixture are provided. Also, in the interior ofthe washing apparatus 5 are to be found spray nozzles, by means of whichthe brushes 6 are sprayed with water and detergent. In addition to this,exit nozzles for steam are provided in order to also clean the printingcylinder 2 with this medium.

FIG. 5 shows a cleaning apparatus, in which the super-imposed washingapparatus 5a is equipped with two, more or less axis parallel brushes,which are installed in housing compartments separated from one another.

It is well to remember, in connection with this, that the cleaningaction procedures, are now provided in two directions and cleaningoperations are thus performed on two neighboring printing cylinderswhich are placed next to one another.

In the designs of the washing apparatuses, it is essential, that theconnections of the different washing apparatuses 5, 5a, as seen in FIGS.1, 4 and 5, for connection to a carriage, match identically. This allowsthe washing apparatuses 5, 5a to be connectable with the guide rail 3 ona choice and exchange basis. Further by these matching connections, thepossibility arises of assigning to each of a plurality of printingcylinders, its own guide rail and carriage. Then, a single washingapparatus can be successively connected to the existing guide rails.Thereby, as a whole, an especially cost effective cleaning device for aplurality of printing cylinders can be realized.

1. A cleaning device for a printing cylinder (2) of a printing machine,comprising a guide rail (3) placed approximately parallel to theprinting cylinder (2), a longitudinally traveling carriage (4) ismounted for movement on the guide rail and a washing apparatus (5) isreleasably connected to the carriage, wherein the guide rail (3) ismovable for positioning of the washing apparatus (5) against theprinting cylinder (2), and the washing apparatus (5) is connected with asource of supply by supply lines for detergent, air, and electricalcurrent, the supply lines extend inside the guide rail (3) from thewashing apparatus (5) to a stationary connection point (7), and theguide rail (3) encloses internally a suction wastewater channel (14),which is located between upper and lower sections (15, 16) of a belt(19) which reciprocates between turn-around rollers (17, 18) fortransport of the carriage (4), the upper belt section (15) forms aneffectively sealing cover for an open longitudinal side of the suctionwastewater channel (14), and in an area of the carriage (4), at leastone connection fitting (25) to an interior of the suction wastewaterchannel (14) is provided and in an area of the stationary connectionpoint (7), a connection pipe (26) for connection to the wastewaterchannel (14) is provided and the remaining supply lines run inside theguide rail (3) from the stationary connection point (7) to the carriage(4).
 2. A cleaning device in accordance with claim 1, wherein thestationary connection point (7) for the supply lines leading to thecarriage (4) is located at one end of the guide rail (3) and for guidingthe supply lines within the guide rail (3), a drag chain (28) isprovided.
 3. A cleaning device in accordance with claim 1, wherein in anarea of the carriage (4), the at least one connection fitting (25)penetrates into the interior of the suction wastewater channel throughthe belt (19) and engages sealingly in at least one connection openingof the washing apparatus (5) on the carriage (4).
 4. A cleaning devicein accordance with claim 1, wherein the belt (19) is constructed as anendless belt and a drive connection to the carriage (4) is formed by theat least one connection fitting (25), said at least one connectionfitting sealingly penetrating the belt (19).
 5. A cleaning device inaccordance with claim 1, where the supply lines comprise at least onehot water and detergent hose, an energy feed cable and a control cable.6. A cleaning device in accordance with claim 1, wherein the carriage(4) and the washing apparatus (5) attachable therewith include on theirmutually facing sides, electrical plug-in connections, as well assuction drainage couplings, which are designed as self connecting, selfcoupling complementary elements and for appropriate positioning forcoupling of the carriage (4) and the washing apparatus (5), at least onepositioning pin (29) engaging in a complementary opening is furnished.7. A cleaning device in accordance with claim 1, wherein quickseparating plug-in connections are provided for connection to the sourceof supply.
 8. A cleaning device in accordance with claim 1, wherein thesource of supply includes at least one electronic control apparatus withan interface to a superimposed control of the printing machine, and anapparatus for generating hot water, steam, suction, compressed air, aswell as means for dispensing detergent.
 9. A cleaning device inaccordance with claim 1, wherein one of the turn-around rollers (17, 18)is coupled with a drive motor (24).
 10. A cleaning device in accordancewith claim 1, wherein the suction wastewater channel (14) has anessentially U-shaped cross sectional profile (20), the open longitudinalside of which is covered over by a portion (15) of the belt (19); andlongitudinal rims of the belt, on a surface distal from the suctionwastewater channel (14), are provided with overlapping side bars (23).11. A cleaning device, in accord with claim 10, wherein the belt (19) isa toothed belt, and on an inside surface, possesses continuous grooves(21) near each edge; and the suction wastewater channel (14), with itsedges (22) of its open longitudinal side, respectively sealingly engagein the grooves (21).
 12. A cleaning device in accordance with claim 1,wherein the guide rail (3) has a basin shape, and on an outer side ofthe basin shape, guides are formed by U-shaped structural elements (10)for the carriage (4), said carriage covering the open side of the guiderail (3) and engaging in the U-shaped structural elements (10) with ballbearing supported slides (13).
 13. A cleaning device in accordance withclaim 1, wherein the guide rail (3) includes an open inner cross sectionfor reception of the suction wastewater channel (14) along with the belt(19) which is associated therewith, and has a longitudinally neighboringspace for the supply lines enclosed in a drag chain (28).
 14. A cleaningdevice in accordance with claim 1, wherein the guide rail (3) includes,for forward and back positioning operations, sliding elements (34) forinsertion into holding structures located on ends of the guide rail, andthrust cylinders (35) are provided for movement of the guide rail, thecylinders are installed at ends of the guide rail (3) and are coupled tolateral holding means.
 15. A cleaning device in accordance with claim 1,wherein for connection of the washing apparatus (5) and the carriage(4), penetrative tongues (30) are installed on the washing apparatus (5)and complementary seatings with plug-in openings (31) are installed onthe carriage (4) and, distanced from this connection, a lockingconnection with a manually activated lever (32) is provided.
 16. Acleaning device in accordance with claim 1, wherein the washingapparatus (5) has a length which is smaller than about half the lengthof the printing cylinder (2).
 17. A cleaning device in accordance withclaim 1, wherein the washing apparatus (5) includes at least onerotating brush (6), which is connected to a driving mechanism and thedriving mechanism is either integrated in the at least one brush (6), ortransmits driving power through chain or belt drives to the at least onebrush (6).
 18. A cleaning device in accordance with claim 17 wherein acleaning operations area of the at least one brush (6) of the washingapparatus (5) are bordered on both sides by a respective blade cleaner(37), and at least in an underpart of the cleaning operations area oneor more suction drainage openings (38) for the accumulating wastewater,detergent mixture are furnished.
 19. A cleaning device in accordancewith claim 1, wherein the washing apparatus (5a) includes two brushes(6), with approximately parallel axes, installed in two chambersseparated from one another, said brushes having active cleaning areasaimed in different directions for simultaneous cleaning of two printingcylinders.
 20. A cleaning device for a printing cylinder ( 2 ) of aprinting machine, comprising a guide rail ( 3 ) placed approximatelyparallel to the printing cylinder ( 2 ), a longitudinally travelingcarriage ( 4 ) is mounted for movement on the guide rail and a washingapparatus ( 5 ) is connected to the carriage, wherein the guide rail ( 3) is movable for positioning of the washing apparatus ( 5 ) against theprinting cylinder ( 2 ), and the washing apparatus ( 5 ) is connectedwith a source of supply by supply lines for detergent, air, andelectrical current, the supply lines extend inside the guide rail ( 3 )from the washing apparatus ( 5 ) to a stationary connection point ( 7 ),and the guide rail ( 3 ) encloses internally a suction wastewaterchannel ( 14 ), which is located between upper and lower sections ( 15,16 ) of a belt ( 19 ) which reciprocates between turn-around rollers (17, 18 ) for transport of the carriage ( 4 ), the upper belt section (15 ) forms an effectively sealing cover for an open longitudinal side ofthe suction wastewater channel ( 14 ), and in an area of the carriage (4 ), at least one connection fitting ( 25 ) to an interior of thesuction wastewater channel ( 14 ) is provided and in an area of thestationary connection point ( 7 ), connection pipe ( 26 ) for connectionto the wastewater channel ( 14 ) is provided and the remaining supplylines run inside the guide rail ( 3 ) from the stationary connectionpoint ( 7 ) to the carriage ( 4 ).